<template>
  <div :class="className" :style="{height, width}" />
</template>

<script setup>
import { ref, onMounted, onBeforeUnmount } from 'vue'
import * as echarts from 'echarts'
import { debounce } from '@/utils/index.js'

const props = defineProps({
  className: {
    type: String,
    default: 'chart-raddar'
  },
  width: {
    type: String,
    default: '100%'
  },
  height: {
    type: String,
    default: '300px'
  }
})

const chart = ref(null)
let resizeHandler = null
const animationDuration = 3000

const initChart = () => {
  chart.value = echarts.init(document.querySelector(`.${props.className}`), 'macarons')

  chart.value.setOption({
    tooltip: {
      trigger: 'axis',
      axisPointer: {
        type: 'shadow'
      }
    },
    radar: {
      radius: '66%',
      center: ['50%', '42%'],
      splitNumber: 8,
      splitArea: {
        areaStyle: {
          color: 'rgba(127,95,132,.3)',
          opacity: 1,
          shadowBlur: 45,
          shadowColor: 'rgba(0,0,0,.5)',
          shadowOffsetX: 0,
          shadowOffsetY: 15
        }
      },
      indicator: [
        { name: 'Sales', max: 10000 },
        { name: 'Administration', max: 20000 },
        { name: 'Information Techology', max: 20000 },
        { name: 'Customer Support', max: 20000 },
        { name: 'Development', max: 20000 },
        { name: 'Marketing', max: 20000 }
      ]
    },
    legend: {
      left: 'center',
      bottom: '10',
      data: ['Allocated Budget', 'Expected Spending', 'Actual Spending']
    },
    series: [{
      type: 'radar',
      symbolSize: 0,
      areaStyle: {
        normal: {
          shadowBlur: 13,
          shadowColor: 'rgba(0,0,0,.2)',
          shadowOffsetX: 0,
          shadowOffsetY: 10,
          opacity: 1
        }
      },
      data: [
        {
          value: [5000, 7000, 12000, 11000, 15000, 14000],
          name: 'Allocated Budget'
        },
        {
          value: [4000, 9000, 15000, 15000, 13000, 11000],
          name: 'Expected Spending'
        },
        {
          value: [5500, 11000, 12000, 15000, 12000, 12000],
          name: 'Actual Spending'
        }
      ],
      animationDuration
    }]
  })
}

onMounted(() => {
  initChart()
  resizeHandler = debounce(() => {
    if (chart.value) {
      chart.value.resize()
    }
  }, 150)
  window.addEventListener('resize', resizeHandler)
})

onBeforeUnmount(() => {
  if (!chart.value) {
    return
  }
  window.removeEventListener('resize', resizeHandler)
  chart.value.dispose()
  chart.value = null
})
</script>
